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1 // Copyright 2013 the V8 project authors. All rights reserved. | |
2 // Redistribution and use in source and binary forms, with or without | |
3 // modification, are permitted provided that the following conditions are | |
4 // met: | |
5 // | |
6 // * Redistributions of source code must retain the above copyright | |
7 // notice, this list of conditions and the following disclaimer. | |
8 // * Redistributions in binary form must reproduce the above | |
9 // copyright notice, this list of conditions and the following | |
10 // disclaimer in the documentation and/or other materials provided | |
11 // with the distribution. | |
12 // * Neither the name of Google Inc. nor the names of its | |
13 // contributors may be used to endorse or promote products derived | |
14 // from this software without specific prior written permission. | |
15 // | |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 | |
28 'use strict'; | |
29 | |
30 // This file relies on the fact that the following declaration has been made | |
31 // in runtime.js: | |
32 // var $Array = global.Array; | |
33 | |
34 // ------------------------------------------------------------------- | |
35 | |
36 // ES6 draft 07-15-13, section 15.4.3.23 | |
37 function ArrayFind(predicate /* thisArg */) { // length == 1 | |
38 if (IS_NULL_OR_UNDEFINED(this) && !IS_UNDETECTABLE(this)) { | |
39 throw MakeTypeError("called_on_null_or_undefined", | |
40 ["Array.prototype.find"]); | |
41 } | |
42 | |
43 var array = ToObject(this); | |
44 var length = ToInteger(array.length); | |
45 | |
46 if (!IS_SPEC_FUNCTION(predicate)) { | |
47 throw MakeTypeError('called_non_callable', [predicate]); | |
48 } | |
49 | |
50 var thisArg; | |
51 if (%_ArgumentsLength() > 1) { | |
52 thisArg = %_Arguments(1); | |
53 } | |
54 | |
55 if (IS_NULL_OR_UNDEFINED(thisArg)) { | |
56 thisArg = %GetDefaultReceiver(predicate) || thisArg; | |
57 } else if (!IS_SPEC_OBJECT(thisArg) && %IsClassicModeFunction(predicate)) { | |
58 thisArg = ToObject(thisArg); | |
59 } | |
60 | |
61 for (var i = 0; i < length; i++) { | |
62 if (i in array) { | |
63 var element = array[i]; | |
64 if (%_CallFunction(thisArg, element, i, array, predicate)) { | |
65 return element; | |
66 } | |
67 } | |
68 } | |
69 | |
70 return; | |
71 } | |
72 | |
73 | |
74 // ES6 draft 07-15-13, section 15.4.3.24 | |
75 function ArrayFindIndex(predicate /* thisArg */) { // length == 1 | |
76 if (IS_NULL_OR_UNDEFINED(this) && !IS_UNDETECTABLE(this)) { | |
77 throw MakeTypeError("called_on_null_or_undefined", | |
78 ["Array.prototype.findIndex"]); | |
79 } | |
80 | |
81 var array = ToObject(this); | |
82 var length = ToInteger(array.length); | |
83 | |
84 if (!IS_SPEC_FUNCTION(predicate)) { | |
85 throw MakeTypeError('called_non_callable', [predicate]); | |
86 } | |
87 | |
88 var thisArg; | |
89 if (%_ArgumentsLength() > 1) { | |
90 thisArg = %_Arguments(1); | |
91 } | |
92 | |
93 if (IS_NULL_OR_UNDEFINED(thisArg)) { | |
94 thisArg = %GetDefaultReceiver(predicate) || thisArg; | |
95 } else if (!IS_SPEC_OBJECT(thisArg) && %IsClassicModeFunction(predicate)) { | |
96 thisArg = ToObject(thisArg); | |
97 } | |
98 | |
99 for (var i = 0; i < length; i++) { | |
100 if (i in array) { | |
101 var element = array[i]; | |
102 if (%_CallFunction(thisArg, element, i, array, predicate)) { | |
103 return i; | |
104 } | |
105 } | |
106 } | |
107 | |
108 return -1; | |
109 } | |
110 | |
111 | |
112 // ------------------------------------------------------------------- | |
113 | |
114 function HarmonyArrayExtendArrayPrototype() { | |
115 %CheckIsBootstrapping(); | |
116 | |
117 // Set up the non-enumerable functions on the Array prototype object. | |
118 InstallFunctions($Array.prototype, DONT_ENUM, $Array( | |
119 "find", ArrayFind, | |
120 "findIndex", ArrayFindIndex | |
121 )); | |
122 } | |
123 | |
124 HarmonyArrayExtendArrayPrototype(); | |
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